Teensy to ESP32 for BLE

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Spartacus

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I have an extra ESP32 module. I was hoping to send messages from Teensy 3.2 via serial or ___________ ?? The ESP32 will only be sending MIDI messages via BLE that were received from the Teensy wired directly to the ESP32. I may have it do other tasks later. I don't mind using a separate ble module, but I have ESP32's... Unless a separate module would have lower latency?
So the question is, how would you suggest communicating between the microcontrollers? I already have an Esp32 sending MIDI messages via BLE; I'm just wondering about the preferred way to communicate between the two.
 
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Frank, treat me like I don't know which end of the crayon to use :) any examples of a cold and schematic come to mind for this that you like?
 
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